SAPONIN INACTIVATED MYCOPLASMA VACCINE

A strain of Mycoplasma which is a causative agent of bovine pneumonias, which has been inactivated by treatment with an agent, which disrupts cel membranes such as saponin, is described. Preferably, the strain is Mycoplasma bovis or Mycoplasma mycoides subsp.mycoides SC. These strains can be used as vaccines. Veterinary compositions, methods of preparing these and their use in prophylaxis is also described and claimed. A strain of Mycoplasma which is a causative agent of bovine pneumonias, which has been inactivated by treatment with an agent, which disrupts cel membranes such as saponin, is described. Preferably, the strain is Mycoplasma bovis or Mycoplasma mycoides subsp. mycoides SC. These strains can be used as vaccines. Veterinary compositions, methods of preparing these and their use in prophylaxis is also described and claimed. L'invention concerne une souche Mycoplasma , qui provoque la pneumonie bovine et qui a été neutralisée par traitement au moyen d'un agent rompant les membranes cellulaires comme la saponine. La souche est de préférence Mycoplasma bovis ou Mycoplasma mycoides subsp. mycoides SC. Ces souches peuvent être utilisées pour des vaccins. La présente invention porte également sur des préparations vétérinaires, des procédés associés et leur utilisation prophylactique.